To cut a long story short we ended up traversing by foot through the jungle around the landslide, reconnecting with the road and waiting for a different bus from San Jose to come pick us up - only a 2.5 hour delay. Fortunately the rest of our long journey went smoothly - we jammily made it onto the (apparently 100% booked) bus to Manuel Antonio without a reservation, and arrived about 6pm - plenty of time to find somewhere to sleep and go our for dinner.
Miguel San Antonio and Quepos
We were blessed with beautiful weather for a nice change at Manuel Antonia National Park - it is a beautiful jungle right on the Pacific Coast. Being on the beach looking out over the rocky Pacific coast line made us both ache for our adopted second home in California. The jungle though is teeming with wildlife despite the hordes of tourists who blunder through here - we saw numerous sloths, white-faced monkeys, racoons and other birdlife.
Of course, the bad weather hadn't left us just yet - that night bad Pacific storms again caused severe flooding in the region - luckily we were on the first bus out the next day which was high enough to get through the roads, but we later heard that many villages were evacuated.